(ˈswiːnɪ) n (Veterinary Science) vet science a wasting of the shoulder muscles of a horse, esp as the result of a nerve injury[C19: probably from German dialect Schweine emaciation, atrophy]
swee•ny
or swee•ney
(ˈswi ni)
n. atrophy of the shoulder muscles in horses. [1820–30, Amer.; compare dial. German Schweine, Pennsylvania German Schwinne]